Incandescent gas-burner.



No. 650,459. Patented May 29, I900. a. n..1=mm, F. u. BENTHAM & .1. u.STOTT. INGANDESCENT GAS BURNER.

(Application filed. June 26, 1899.)

' CM Modal.)

UNITED STATES ATENT Fries,

GEORGE HENRY FIRTH, FRANK HOLDSWVORTH BENTHAM, AND JOHN HENRY STOTT, OFBRADFORD, ENGLAND.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 650,459, dated May 29,1900.

Application filed M11426, 1 89 9.

To all whom, it may concern:

Be it known that we, GEORGE HENRY FIRTH, engineer, residing at 35Carlisle Terrace, FRANK HOLDSWORTH BENTHAM, machinist, residing at 16Laisteridge Lane, and JOHN HENRY STOTT, dyer, residing at 17 Oranbourneroad, Ohellow Dean, Bradford, in the county of York, England, subjectsof the Queen of Great Britain and Ireland, have invented certainImprovements in or in Connection with Incandescent Gas-Burners, of whichthe following is a specification.

This invention relates to improvements in orin connection with burnersand supports for incandescent gas-lighting, such as are in use at thepresent time, our object being to prevent vibratory shocks from injuringor destroyin g the delicate mantles used in this form of gas-lighting.

Our invention will be fully described with reference to the accompanyingdrawings, in which- Figure 1 is a vertical section of a burner fittedwith our improvements, and Fig. 2 an elevation of the Bunsen-tubearrangement fitted with some of the improved parts.

From the drawings it will be seen that in carrying out our invention wemake use of the ordinary form of Bunsen tube A as used for theincandescent gas-burners commonly in vogue at the present time; but inorder to secure the mantles from vibratory shocks that would prematurelydestroy them we separate the cap B, which supports the mantle and rodand which is usually fixed on the Bunsen tube, and fit it onto the topof another tube 0 of larger dimensions than the Bunsen tube and which ismade to inclose the latter, but without contact other than that made bya loose plate or tube, as described'later. The said 'free tube 0 is madeto hang by means of an internal flange D at. its upper end upon theexpanded end of a conical spring E, vertically fixed, the smaller end ofwhich is passed over the Bunsen tube and rests on an adjustablesupporting-ring F on the Bunsen tube. Over the exterior of the hangingtube 0 We slip a balance-weight G of suitable dimensions, which by itsinertia prevents a too-sudden movement when effected by shocks andSerial No. 721,972. (No model.)

which rests on an external flange II at the lower end of the said tube.

When the free or swinging portion of the burner is suspended on aninternal spring E, such as we have described above, we fix upon theupper end ofthe Bunsen tube, which projects within the spring, anadjustable ring J, shaped on its exterior in conformity with the taperof the spring E and which can be raised or lowered by being screwed, asindicated in Fig. 2, so as to come more or less in contact with thespring, according to the amplitude of the lateral oscillations that maybe set up in the said free parts, whereby a too-violent movement in thatdirection can by this means be prevented.

In a compact arrangement of burner with gauze cap, such as we havedescribed and shown in the drawings herewith, we find it necessary toclose up the intervening space between the free tube 0 and the Bunsensupply-tube Abecause of the liability of the combustible to escape andlight back at this point, especially if the combustible is to be usedincreased in pressure. To seal this effectually and at the same timeallow the swinging part a universal freedom of move ment, we insert aloose conical tube K, of metal or other refractory substance, betweenthe free tube 0 and the Bunsen tube A in such a way that its upper andwider end has a sliding contact with the inner surface of the free tube0, while its lower and narrower end has sliding contact on the Bunsentube A, by which means we obtain the necessary freedom of movement,while at the same time we get an inclosed chamber effectually sealedagainst the dangerous or wasteful passage of air or gas and an enlargedmixing-chamber for the combustible from the Bunsen or sup-' ply tube,whether the pressure be normal or 2. In a burner for incandescentgas-lighting the combination with a spring located in the Bunsen tubeand supporting the burner and mantle of an adjustable nut or ring on theBunsen tube or supply-pipe for checking lateral movement of the saidsupportingspring substantially as described.

3. In burners for incandescent gas-lighti mg the combination of a looseconical sealingtube free to move in the intervening space between theloose and fixed parts of the burner and a tube surrounding said sealingtube, both forming a mixing-chamber substantially as and for thepurposes described.

4. In burners for incandescent gas-lighting the combination with Bunsentube A and mantle, of a cap B removably mounted on a tubular chamber 0,tubular chamber 0 with flanges D and H, spring E supporting chamber O,weight G resting on flange H of chamber C, conical sealing-tube looselymounted on tube A and engaging therewith at its lower end and withinterior of chamber 0 at its upper end, collar F adjustably mounted ontube A and supporting spring E, and conical nut or ringJ also adjustably mounted 011 tube A to regulate lateral movement of spring Esubstantially as described.

5. In burners for incandescent gas-lighting GEORGE HENRY FIRTH. FRANKHOLDSWOR'III BENlllAall. JOHN HENRY STOTT.

Witnesses:

FRED FOSTER, WM. I. Johnson.

